Water Supply - Rheem RTGH-95DV Use And Care Manual

Water Supply

CAUTION:
MUST ONLY be used with the following water
supply conditions to prevent product damage and
operation failure.
• Clean, potable water free of corrosive chemicals,
sand, dirt, or other contaminates.
• Inlet water temperatures above 32°F (0°C), but
not exceeding 120°F (49°C).
• DO NOT reverse the HOT and COLD water
connections.
• DO NOT connect this water heater to water lines
previously used for space heating. All water
piping and components shall be suitable for
potable water.
• With recommended water quality (see chart).
TDS (Total
pH
Dissolved Solids) Dioxide (CO
6.5–8.5 Up to 500 mg/L Up to 15 mg/L
Water Supply Connections
CAUTION:
not apply heat to the HOT or COLD water
connections. If sweat connections are used, sweat
tubing to the adapter before fitting the adapter
to the water connections on the water heater.
Any heat applied to the water supply fittings will
permanently damage the internal components of
the water heater.
NOTICE:
In cold environments, ice can
accumulate in the water heater's connectors. Plug
in the water heater power cord for approximately
10 minutes before making these connections. This
will melt any ice buildup.
This water heater
Chart for Recommended Water Quality Levels
Free Carbon Total
Aluminum
) Hardness
2
Up to Up to
200 mg/L 0.2 mg/L
IMPORTANT—Do
INSTALLATION INSTRUCTIONS
Thermal Expansion
A thermal expansion tank will be required if the
water heater is installed in a recirculation system.
This prevents damage to the heater, related piping,
and the relief valve.
NOTICE:
Replacing the relief valve will
not correct the problem!
The expansion tank is designed with a built-in air
cushion that compresses as the system pressure
increases. This relieves the over-pressure condition
and eliminates the repeat operation of the relief
valve.
For other approved methods of thermal expansion,
contact an installing contractor, water supplier, or
plumbing inspector.
Chlorides Copper Iron
Up to Up to Up to
200 mg/L 1.0 mg/L 0.3 mg/L
Plumbing should be carried out by a qualified
plumbing contractor in accordance with local
codes.
Only use approved plumbing materials.
The minimum diameter of all water pipes should
be 3/4 in. (1.9 cm).
To conserve energy and to prevent freezing,
insulate both COLD and HOT water supply lines.
Do not insulate the drain line or pressure-relief
valve.
Manganese Zinc
Up to Up to
0.05 mg/L 1.0 mg/L
47